Lower Third Name Title Duration Seconds Lookup

Actual lower-third display-duration screen against independently verified readable house bands, not existing line-length fit or a fixed universal duration. Caller independently verifies context, evidence, reference edition and applicability; not factual authenticity, current legal advice or publication clearance.

Description

A lower-third duration determines how long a name or title graphic remains visible.

A lower-third duration determines how long a name or title graphic remains visible.^[1]

Compare measured seconds with the applicable display band and separately assess text length and legibility.

When to use Lower Third Name Title Duration Seconds Lookup

Use this tool to calculate or review the supplied observations under the stated rules. Establish the reviewed evidence, house style or applicable jurisdiction and dated reference.

How to use Lower Third Name Title Duration Seconds Lookup and understand its results

Establish the reviewed evidence, house style or applicable jurisdiction and dated reference.
Enter observedLowerThirdHoldSeconds, callerVerifiedMinimumHoldSeconds, callerVerifiedMaximumHoldSeconds, using the field meanings and rules below, then run the tool.
Read signedCallerHoldDurationMarginSeconds, using the output meanings and calculation rules below.
Correct any reported input issue and run again. Before using a successful result, check the stated units, signs, reference scope and observation coverage.

Input field	Meaning	Value type	Requirement
observedLowerThirdHoldSeconds	Observed lower third hold seconds	number	Required
callerVerifiedMinimumHoldSeconds	Caller verified minimum hold seconds	number	Required
callerVerifiedMaximumHoldSeconds	Caller verified maximum hold seconds	number	Required

Use nonnegative observed duration and nonnegative lower and upper duration limits in seconds, with lower≤upper. Return the smaller of observed−lower and upper−observed. Zero includes the boundary; negative values lie outside the supplied band. Equal band endpoints are permitted.

signedDurationMargin=min(observedSeconds−lowerSeconds,upperSeconds−observedSeconds)

Use the matching field units and the exact boundary, ordering and reference rules above.

Output field	Meaning	Value type
signedCallerHoldDurationMarginSeconds	Signed caller hold duration margin seconds; preserve the subtraction order and sign defined in the mechanics	number

json

{
  "input": {
    "observedLowerThirdHoldSeconds": 4,
    "callerVerifiedMinimumHoldSeconds": 3,
    "callerVerifiedMaximumHoldSeconds": 6
  },
  "output": {
    "signedCallerHoldDurationMarginSeconds": 1
  }
}

Limitations and assumptions

The band is caller-defined. This does not infer readability from text, select a universal duration or edit the video.

Missing required fields, unknown fields, wrong types and violated rules return input issues. Numeric values and outputs must be finite.

Alternative or Complementary methods

For a related step, use Pica Agate Line Depth Measure Converter: Picas and agate lines are nominal print-depth units with different lines-per-inch conventions. For a complementary comparison, use Jump Page Continued Line Placement Lookup: Jump and continued lines connect parts of a story in a print layout.

References

Lower Third Name Title Duration Seconds Lookup — tool.io

Similar or alternative tools

Pica Agate Line Depth Measure Converter
Picas and agate lines are nominal print-depth units with different lines-per-inch conventions.
Jump Page Continued Line Placement Lookup
Jump and continued lines connect parts of a story in a print layout.